spThin: an R package for spatial thinning of species occurrence records for use in ecological niche models
spThin: an R package for spatial thinning of species occurrence records for use in ecological niche models
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DOI：
10.1111/ecog.01132
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发表时间：
2015-05-01
期刊：
影响因子：
5.9
通讯作者：
Anderson, Robert P.
中科院分区：
文献类型：
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作者：
Aiello-Lammens, Matthew E.;Boria, Robert A.;Anderson, Robert P.
物种发生记录的空间细化有助于解决与空间抽样偏差相关的问题。理想情况下，细化删除了必要的最少的记录，以大大减少采样偏差的影响，同时保留了最大量的有用信息。空间细化可以手工完成；然而，对于大型数据集来说，这是非常耗时的。使用随机化方法，spThin R包中的thin'函数在运行足够的迭代时，返回给定细化距离下具有最大记录数的数据集。我们在这里提供了一个加勒比棘口袋鼠的工作示例，其中获得的结果与人工细化的结果相匹配。
Spatial thinning of species occurrence records can help address problems associated with spatial sampling biases. Ideally, thinning removes the fewest records necessary to substantially reduce the effects of sampling bias, while simultaneously retaining the greatest amount of useful information. Spatial thinning can be done manually; however, this is prohibitively time consuming for large datasets. Using a randomization approach, the thin' function in the spThin R package returns a dataset with the maximum number of records for a given thinning distance, when run for sufficient iterations. We here provide a worked example for the Caribbean spiny pocket mouse, where the results obtained match those of manual thinning.